COMPOUND AND PREPARATION METHOD THEREOF, AND ORGANIC ELECTROLUMINESCENT DEVICE
申请人:BOE TECHNOLOGY GROUP CO., LTD.
公开号:US20180114922A1
公开(公告)日:2018-04-26
Disclosed are a compound and a method for preparing the same, and an organic electroluminescent device. The compound has a general formula as shown in Formula I: wherein R is a substituent containing an N, O or S atom. The application of the compound to a host material of a light-emitting layer for preparing an organic electroluminescent device can improve the luminescence efficiency.
Synthesis of azafluorenone via oxidative intramolecular Heck cyclization
作者:Shubhendu Dhara、Atiur Ahmed、Sukla Nandi、Shantanu Baitalik、Jayanta K. Ray
DOI:10.1016/j.tetlet.2012.10.085
日期:2013.1
and highly efficient protocol to azafluorenone exploiting intramolecular oxidative Heckcyclization using Pd(0) is presented. Precursor alcohols afforded azafluorenone in a single step with simultaneous oxidation and cyclization under Heck reaction condition in excellent yield. This methodology could be very much crucial in the total synthesis of azafluorenone alkaloids for promising pharmacological